William Sonis, MD
NPI 1538105473 · Child & Adolescent Psychiatry Physician · Philadelphia, PA
William Sonis, MD is a Child & Adolescent Psychiatry Physician provider in Philadelphia, PA (NPI 1538105473).
Provider details
- NPI number
- 1538105473
- Entity type
- Individual
- Primary specialty
- Child & Adolescent Psychiatry PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- MD020105E (PA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
20 yrs in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
1 documented practice location
Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-06-21
- Last updated
- 2007-08-16
Frequently asked questions
- What is William Sonis's NPI number?
- William Sonis's National Provider Identifier (NPI) is 1538105473, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is William Sonis's specialty?
- William Sonis is listed in the NPPES registry with a primary specialty of Child & Adolescent Psychiatry Physician (Allopathic & Osteopathic Physicians).
- Where is William Sonis located?
- William Sonis's practice location on file with NPPES is 4641 Roosevelt Blvd, Philadelphia, PA 19124-2343.
- What is William Sonis's phone number?
- The practice phone number listed in the NPPES registry for William Sonis is (215) 831-4811.
- Is William Sonis's NPI active?
- Yes — William Sonis's NPI (1538105473) is active in the NPPES registry as of the last update on 2007-08-16.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.